I think people dislike his style too much, and that its unlikely he will ever have to pull out the drama the other greats did in order to win certain fights. His technique is too good, and he always comes in the best shape he possibly can which makes his fights a lot less dramatic then say Ali who didn't train hard enough for guys like Frazier(and wasn't ready to face him the first time they fought).

I just think its amazing that a lot of the great fighter athletically haven't had his technical brilliance, he is unique mix of Bernard Hopkins' ring wizardy with truly elite athletic ability, and the stamina of anyone who's ever fought.

All that being said he won't ever be the top fighter p4p ever simply because guys don't like him enough. There will always be another opponent he supposedly avoided, arguements that excitement counts for where you stand on the p4p pole.

We will see after Mayweather-Pacquiao that might be the first time to future top 10 p4p'ers ever face eachother under fair circumstances. Robinson was way bigger than Armstrong who was aging, and Tunney was bigger than Zale.